HARP model rotor test at the DNWData from a test of a dynamically scaled model of the Hughes Advanced Rotor Program (HARP) bearingless model main rotor and 369K tail rotor are reported. The history of the HARP program and its goals are reviewed, and the main and tail rotor models are described. The test facilities and instrumentation are described, and wind tunnel test data are presented on hover, forward flight performance, and blade-vortex interaction. Performance data, acoustic data, and dynamic data from near field/far field and shear layer studies are presented.
Document ID
19900041112
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dawson, Seth (U.S. Army, Aeroflightdynamics Directorate, Moffett Field CA, United States)
Jordan, David (Army Aviation Systems Command Moffett Field, CA, United States)
Smith, Charles (NASA Ames Research Center Moffett Field, CA, United States)
Ekins, James (Army Aviation Systems Command Moffett Field, CA, United States)
Silverthorn, Lou (McDonnell Douglas Helicopter Co. Mesa, AZ, United States)